Search found 19 matches
- Sat Mar 12, 2016 7:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 7861
- Views: 1099774
Re: Chemistry Jokes
Hahahahaha
- Sat Mar 12, 2016 7:48 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 7861
- Views: 1099774
Re: Chemistry Jokes
I just wanna wish everyone good luck with their finals!!!
- Sat Mar 12, 2016 7:40 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 7861
- Views: 1099774
Re: Chemistry Jokes
I didn't drink water today while studying for finals. I was afraid it would've diluted my concentration
- Sat Mar 12, 2016 7:31 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 7861
- Views: 1099774
Re: Chemistry Jokes
Made me chuckle
- Sun Feb 28, 2016 7:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2016
- Replies: 48
- Views: 18930
Re: Quiz 3 Winter 2016
Sophia Xu 3F wrote:Does the quiz cover functional group material?
No, functional groups are not covered from pages 67 to 99.
- Sun Feb 28, 2016 7:32 pm
- Forum: *Alkanes
- Topic: Clarification on what will be on Quiz 3
- Replies: 2
- Views: 352
Re: Clarification on what will be on Quiz 3
I believe all material up to page 99. I would make sure though.
- Sat Feb 06, 2016 2:25 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm Day
- Replies: 1
- Views: 314
Midterm Day
Hi, Chem_mod
I recall class being cancelled on the day of the 14A midterm. Will there be class this Wednesday?
I recall class being cancelled on the day of the 14A midterm. Will there be class this Wednesday?
- Thu Jan 28, 2016 1:12 am
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Error in Entropy and Degeneracy
- Replies: 1
- Views: 252
Error in Entropy and Degeneracy
Boltzmann Equation:
In the course reader, it states that the larger the error in the degeneracy term (W) would lead to a smaller error in entropy (S). Can someone explain this in more depth?
In the course reader, it states that the larger the error in the degeneracy term (W) would lead to a smaller error in entropy (S). Can someone explain this in more depth?
- Fri Jan 22, 2016 2:05 am
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Reversible and Irreversible
- Replies: 1
- Views: 313
Reversible and Irreversible
Can someone explain in depth the major differences between reversible and irreversible processes?
- Mon Nov 30, 2015 5:17 am
- Forum: Lewis Acids & Bases
- Topic: Lewis Acids and Bases
- Replies: 5
- Views: 865
Re: Lewis Acids and Bases
A Lewis Base is electron rich while a Lewis Acid is electron deficient. You would typically have to draw (or mentally picture) the lewis structures of the compounds to determine whether or not a compound is a Lewis Acid or a Lewis Base.
- Mon Nov 30, 2015 5:10 am
- Forum: Polyprotic Acids & Bases
- Topic: Polyprotic Acids Tendency
- Replies: 1
- Views: 390
Polyprotic Acids Tendency
Does a polyprotic acid usually lose all of its protons in a reaction (dissociate fully) or does it depend on something such as if it is strong or weak?
- Mon Nov 30, 2015 4:48 am
- Forum: Air Pollution & Acid Rain
- Topic: Reducing Acid Rain
- Replies: 4
- Views: 1450
Re: Reducing Acid Rain
Coal factories typically have "scrubbers" installed within their smokestacks. These "scrubbers" usually contain limestone particles. The gases from burning coal leave the factory through the smokestack and must pass through limestone chamber; in here, sulfur dioxide reacts with l...
- Mon Nov 30, 2015 4:34 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: balanced reactions
- Replies: 2
- Views: 430
Re: balanced reactions
The first thing you should always do in a problem is check if the equation is balanced.
- Sun Nov 01, 2015 3:20 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Bond Order and # of Electrons for stability
- Replies: 3
- Views: 599
Re: Bond Order and # of Electrons for stability
I agree with Alex Sun that all you need to know for question 5 is that when bond order is higher, stability is greater as well. However, in terms of electrons, I believe that stability is greater when there are more electrons that fill up the bonding orbitals (sigma and pi). Inversely, stability dec...
- Sat Oct 24, 2015 3:54 pm
- Forum: Lewis Structures
- Topic: 3.57B
- Replies: 1
- Views: 323
3.57B
This part of the problem asks for the lewis and resonance structures for the hydrogen sulfite ion (HSO3-). In the solutions manual it says that only one structure obeys the octet rule, and depicts three oxygen atoms bonded to a sulfur atom, with the single hydrogen atom bonded to one of the oxygen a...
- Sun Oct 18, 2015 2:16 am
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Quiz 1 Preparation #3
- Replies: 3
- Views: 764
Re: Quiz 1 Preparation #3
During lecture, Professor Lavelle used the equation Δp x Δv > h/4pi. Does this work too? I thought the equation was ΔpXΔx but he did examples using the first equation. Is there a way to get one equation from the other? Or did I just write down the wrong information? I believe you somehow wrote down...
- Sun Oct 18, 2015 1:35 am
- Forum: Ionic & Covalent Bonds
- Topic: Types of Bonds
- Replies: 4
- Views: 511
Re: Types of Bonds
An element does not have a set "bond" that it carries around. The type of bond it has with other (or the same type) of elements will depend on its electronic interaction with the other element(s). Usually all atoms in a molecule strive for an "octect" to achieve the greatest stab...
- Mon Oct 12, 2015 1:33 am
- Forum: Trends in The Periodic Table
- Topic: Ionization Energy vs. Threshold energy
- Replies: 3
- Views: 1538
Re: Ionization Energy vs. Threshold energy
Like Alex said, the threshold energy is associated with the amount of energy required to remove an electron from a solid (via the photoelectric effect). As specified in the course reader, ionization energy refers to the amount of energy needed to remove an electron from an atom in its gaseous phase....
- Mon Oct 12, 2015 1:12 am
- Forum: Administrative Questions and Class Announcements
- Topic: Finals
- Replies: 1
- Views: 578
Re: Finals
I don't believe so, since 14B is a whole different class. Also, on pg. 165 on our course reader, prof. Lavelle gives details on the final exam and leaves it off with:
"ENJOY YOUR BREAK
SEE YOU IN CHEM 14B :)"
"ENJOY YOUR BREAK
SEE YOU IN CHEM 14B :)"